The boxing gloves of Muhammad Ali, front, and of Sonny Liston, rear, sit on a table at Heritage Auctions by a photo and magazine depicting a moment captured during the fight, Thursday, Jan. 22, 2015, in Dallas. The 1965 rematch between Ali and Liston remains one of the most controversial sporting events of the 20th century. To this day, 50 years later, questions swirl. Was it a knockout or ìphantom punchî that Ali threw when he decked Liston minutes into the first round of their heavyweight title fight. (AP Photo/Tony Gutierrez)